<div class="form-horizontal">
    <fieldset class="add-user">
        <legend>Añadir usuario</legend>
        <div class="message-error"></div>
        <div class="form-group">
          <label for="inputName" class="col-sm-2 control-label">Nombre de usuario:</label>
          <div class="col-sm-10">
            <input type="text" class="form-control" id="inputName" placeholder="Nombre...">
          </div>
        </div>
        <div class="form-group">
          <label for="inputEmail" class="col-sm-2 control-label">Correo Electrónico:</label>
          <div class="col-sm-10">
            <input type="email" class="form-control" id="inputEmail" placeholder="Correo...">
          </div>
        </div>
        <div class="form-group">
          <label for="inputPassword" class="col-sm-2 control-label">Password</label>
          <div class="col-sm-10">
            <input type="password" class="form-control" id="inputPassword" placeholder="Contraseña...">
          </div>
        </div>
        <div class="form-group">
          <div class="col-sm-offset-2 col-sm-10">
            <a href="#" class="btn btn-default enviar-add-user">Enviar</a>
          </div>
        </div>
    </fieldset>
</div>